ACL entries DELETE and DELETE_CHILD

The ACL entries DELETE and DELETE_CHILD require special considerations. The effect of various combinations of the DELETE attribute for a file, and the DELETE_CHILD attribute for its parent directory, is given in Table 1.

In this table, the columns refer to the ACL entry for a given file, and the rows refer to the ACL entry for its parent directory. The various combinations of these attributes produce one of these results:

Permit: Indicates that GPFS permits removal of a file with the combination of file and parent directory ACL entries specified. (Other permission checking can exist within the operating system as well.)
Deny: Indicates that GPFS denies (does not permit) removal of a file with the combination of file and parent directory ACL entries specified.

Removal of a file includes renaming the file, moving the file from one directory to another even if the file name remains the same, and deleting it.

Table 1. Removal of a file with ACL entries DELETE and DELETE_CHILD
	ACL Allows DELETE	ACL Denies DELETE	DELETE not specified	UNIX mode bits only
ACL Allows DELETE_CHILD	Permit	Permit	Permit	Permit
ACL Denies DELETE_CHILD	Permit	Deny	Deny	Deny
DELETE_CHILD not specified	Permit	Deny	Deny	Deny
UNIX mode bits only - wx permissions allowed	Permit	Permit	Permit	Permit
UNIX mode bits only - no w or no x permissions allowed	Permit	Deny	Deny	Deny

The UNIX mode bits are used in cases where the ACL is not an NFS V4 ACL.